FUNDAMENTALS OF NURSING 9TH EDITION POTTER TEST BANK questions with answers Graded A +|UPDATED!!!

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Chapter 41: Oxygenation vv vv




Fundamentals of Nursing, 9th Edition vv vv vv vv




vv MULTIPLE CHOICE vv




1. A nurse is teaching staff about the conduction of the heart. In which order will the
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nurse present the conduction cycle, starting with the first structure?
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1. Bundle of His vv vv




2. Purkinje network vv




3. Intraatrial pathways vv




4. Sinoatrial (SA) node vv vv




5. Atrioventricular (AV) node vv vv




a. 5, 4, 3, 2, 1
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b. 4, 3, 5, 1, 2
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c. 4, 5, 3, 1, 2
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d. 5, 3, 4, 2, 1
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ANS: B vv




The conduction system originates with the SA node, the “pacemaker” of the heart. The
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electrical impulses are transmitted through the atria along intraatrial pathways to the AV
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node. It assists atrial emptying by delaying the impulse before transmitting it through the
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Bundle of His and the ventricular Purkinje network.
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2. A nurse is teaching the patient with mitral valve problems about the valves in the
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heart. Starting on the right side of the heart, describe the sequence of the blood flow
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through these valves.
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1. Mitral

2. Aortic

3. Tricuspid




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, FUNDAMENTALS OF NURSING 9TH EDITION POTTER TEST vv vv vv vv vv vv

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4. Pulmonic
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a. 1, 3, 2, 4
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b. 4, 3, 2, 1
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c. 3, 4, 1, 2
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d. 2, 4, 1, 3
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ANS: C vv




The blood flows through the valves in the following direction: tricuspid, pulmonic, mitral,
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and aortic.
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3. A nurse explains the function of the alveoli to a patient with respiratory problems. Which
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information about the alveoli’s function will the nurse share with the patient?
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a. Carries out gas vv vv


exchange
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b. Regulates tidal volume vv vv
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c. Produces hemoglobin vv




d. Stores oxygen vv




ANS: A vv




The alveolus is a capillary membrane that allows gas exchange of oxygen and carbon
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dioxide during respiration. The alveoli do not store oxygen, regulate tidal volume, or
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produce hemoglobin.
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4. A nurse auscultates heart sounds. When the nurse hears S2, which valves is the nurse
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hearing close?
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a. Aortic and mitral vv vv




b. Mitral and tricuspid vv vv




c. Aortic and pulmonic vv vv




d. Mitral and pulmonic vv vv




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, FUNDAMENTALS OF NURSING 9TH EDITION POTTER TEST vv vv vv vv vv vv

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ANS: C vv




As the ventricles empty, the ventricular pressures decrease, allowing closure of the aortic
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and pulmonic valves, producing the second heart sound, S2. The mitral and tricuspid
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produce the first heart sound, S1. The aortic and mitral do not close at the same time. The
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mitral and pulmonic do not close at the same time.
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5. The nurse is teaching about the process of exchanging gases through the alveolar
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capillary membrane. Which term will the nurse use to describe this process?
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a. Ventilation
b. Surfactant
c. Perfusion
d. Diffusion

ANS: D vv




Diffusion is the process of gases exchanging across the alveoli and capillaries of body
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tissues.Ventilation is the process of m o v Ni nUgRgSaI Ns eGs Ti Bn .t Co OaMn d out of the lungs. Surfactant is a
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chemical produced in the lungs to maintain the surface tension of the alveoli and keep them
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from collapsing. Perfusion is the ability of the cardiovascular system to carry oxygenated
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blood to tissues and return deoxygenated blood to the heart.
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6. A nurse is caring for a patient who was in a motor vehicle accident that resulted in
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cervical trauma to C4. Which assessment is the priority?
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a. Pulse
b. Respirations
c. Temperature
d. Blood pressure vv




ANS: B vv




Respirations and oxygen saturation are the priorities. Cervical trauma at C3 to C5 usually
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results in paralysis of the phrenic nerve. When the phrenic nerve is damaged, the
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diaphragm does not descend properly, thus reducing inspiratory lung volumes and causing
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hypoxemia. While pulse
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